docs: update CHANGELOG for v0.1.1

Document all changes including GitHub Actions workflows,
editor configuration, community files, and build improvements.

Author: MasuRii

CHANGELOG.md

@@ -0,0 +1,42 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/).
+
+## [Unreleased]
+
+## [0.1.1] - 2026-03-17
+
+### Added
+
+- GitHub Actions CI workflow for linting and building.
+- GitHub Actions workflow for GitHub Pages deployment.
+- GitHub Actions release workflow.
+- Issue templates for bug reports and feature requests.
+- Pull request template for consistent PR descriptions.
+- Editor configuration (`.editorconfig`) for consistent coding style.
+- Prettier configuration for code formatting.
+- VS Code workspace settings for project-specific editor configuration.
+- Git attributes for consistent line endings.
+- MIT License file.
+- Code of Conduct (Contributor Covenant).
+- Contributing guidelines.
+- Security policy.
+- AGENTS.md for AI-assisted contribution guidance.
+
+### Changed
+
+- Enhanced README with badges, improved formatting, and project metadata.
+- Updated `package.json` with proper npm metadata (description, keywords, repository, bugs, homepage).
+- Upgraded `next` dependency from `16.1.6` to `^16.1.7`.
+- Added `cross-env` for cross-platform environment variable support.
+- Updated `.gitignore` to exclude IDE-specific files and local settings.
+- Configured `next.config.ts` to support static export for GitHub Pages deployment.
+
+## [0.1.0] - 2026-03-17
+
+### Added
+
+- Initial public project scaffold and route-finder MVP.